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The scientists who work he based his premise on are saying their research does not support this conclusions. The scientists are showing you with their research. You would know that if you read the article.
What's more confusing is they state "..results highlight the potential role of the learning environment in contributing to differences in a child’s cognitive abilities at age twelve." This indicates that if there is a genetic component, it is largely irrelevant as the learning environment has the greater impact.
"However, there are doubts around the world about the Nicaragua Canal project, mainly focusing on its engineering difficulty and funding during the construction phase and the economic viability after completion."
You mean a hypothesis until tested. A theory is a proven hypotheses - something laymen get wrong all the time. FYI string "theory" is dead. It was never alive to begin with only in the minds of people grasping at straws. A spate of recent research has consigned string "theory" to the dust bin.